Flood gate



Dec. 22, 1931. R. c. FORCE ET AL FLOOD GATE Filed Dec. 26, 1929INVENTORS, C- 9 10 ATTORNEYS.

Mal M 7194;.

II II conduit is drawn up snugly about the flange a clamp bolt 7 passingthrough outwardly Patented Dec. 22, 1931 D mEs m l-Em OFFICE RAYMOND c.roncn or rinnmour, nn HAROLD w. FORGE, or oAKLANn-cAL IFoRnIA,

ASSIGNORS T0 CALIFORNIA CORRUGATED curvnnr 00., or BEBKELEY,,CALIEORNIA,

A CORPORATION OF CALIFORNIA I moon GATE

Application filed December 26', 1929. Serial 310.418,:302.

The present invention relates to automatic flood gates or check gates ofthe type used for the directional control of the flow of water through aconduit, in irrigation, drainage or other similar work.

The objects of the invention are to provide a flood gate which will openeasily and wide ly under a low head of water flowing in one U directionand close tightly under a reverse flow; to provide means for preventingthe ate from 'ammin or becomin stuck in open position; to provideinexpensive means for firmly attaching the gate to the end of theconduit; and to provide means for converting the gate from a simplecheck gate into a combined check and overflow gate. Other objects andadvantages of the device will become apparent from the followingdescription,,which should be read with the understanding that the form,construction and arrangement of the several parts may be varied Withinthe limits of the appended claims without departing from the spirit ofthe invention as expressed in said claims.

In the accompanying drawings Fig. 1 is a side elevation of our gateattached to the end of a conduit, the gate itself being shown in openposition. 7

Fig. 2 is a front elevation.

Fig. 3 is a central vertical section showing the gate in closedposition.

Fig. 4 is a sectional detail of one of the link' pivots.

In the drawings, the reference numeral 1 designates the end portion of aconduit, shown as of the well known corrugated form. 2 is the body orframe of the gate which is provided on its rear face with a flange 3,having a rounded outer surface 4 adapted to fit closely within the endcorrugation 5 of the conduit 1. The conduit is shown with the usuallongitudinal joint 6. In attaching the body 2 to the conduit, the flange8 is inserted into the end corrugation 5 of said conduit before thejoint is fastened. The end of the 3 in any suitable manner, as forexample by projecting lugs 8, and the joint 6. is then fastened byrivets or any other desired means.

tightly upon The flange 3 is thus securely held withinthe endcorrugation 5 of the conduit a simple and inexpensive manner.

The front of the gate body 2 is provided with a seating face 9 againstwhich the gate-. 5 seats. The gate itself is a circular disk formed intwo parts 10 and 11 for a purpose to. he explained hereinafter. The body2 has a pair ofupstanding spaced ears or brackets 12 upon which arepivoted depending links 13. The lower gate portion 10 has a pairofbosses 14 pivotally connected with said links. The gate is thuspivotally hung upon said links at a point somewhat above I its centerofgravity and is-adapted to beet 'held by its own weight'against theseating face 9 of the body 2. When an outward flow of water occursthrough the conduit, the gate 1011 swings away from the face .9,allowing the water to discharge, but upon the cessation of such outwardflow or upona reversal of the flow, the gate automatically closes toprevent any inflow of waterintothe conduit. On account of the hanging ofthe gate by means of the links 13 it is easily and widely-3., opened byan outflow of water even at very low head.-

A lug 15 is provided upon the top of the gate to engagethe upper edgeof'the body 2,

as indicated in the full line position in Fig. 1, to prevent the gatefrom swinging tosuch a position that it would tend-to jam 'in theopening of the body. Lugs; 16 are also provided upon the sides ofthegate to engage the lower ends 17 of the links 13 in order toc 5prevent the gate'from swinging too'far with respect to said links.Therefore, if the gate opens wide, as indicated in. broken line positionin Fig. 1, under a large outflow of water, the lugs 16 will come intocontact with the ends of the links 13, thus insuring that, upon closingof the gate, the top lug 15 will engage the upper edge of the bodyinstead of entering the aperture therein as would be likely to occur ifthe side lugs 16*w-ere noting; -present..;Thus the gate cannot jam underany. conditions, and closes instantly and V cessation of: the outwardflow of water.

v The gate itself is formediin' parts'102100 and 11, as stated above.The joint between said parts may be in any position in the height of thegate, and is shown for example in Fig. 2 as about its middle, asindicated by the line 18. The lower portion carries the bosses 14lay-which the gate is hung on the links 13.

' bearing surface for the link, but permits the nut 22 to beset uptight, thus preventing it The two portions of the gate may be heldtogether in any desired manner, as for example by means of cleats 19 andbolts 20. If

desired, the upper portion 11 may be removed entirely, leaving only thelower portion 10 to function as a combined check and overflow gate. Inthis condition any water flowing outwardly through the conduit 1 will bedischarged, but water from outside cannot enter said conduit until theoutside level rises to the top of the lower portion 10 of the gate,whereupon such water may overflow the gate and enter the conduit.

The pivotal connections between the ends of the links 13" and the framebrackets 12 are preferably made-as shown in Fig. 1. A stud or bolt 21 isembedded in the bracket 12, and is threaded to receive a nut 22. A.bushing 23 surrounds the, bolt 21 between the nut and the bracket, andthe link 13 swings upon said bushing. The bolt is provided with suitableretaining means, such as a circumferential groove24, and is cast intothe bracket. The bushing 23 not only provides increased from workingloose. The same construction isemployed at the lower ends of the links.the bolts being embedded in the gate lugs 14:.

' We claim a 1. A flood gate comprising a conduit having acircumferential channel formed in its end portion, a body having aseating face on one side,-a flange extending from the opposite side ofsaid body and adapted to be received within said channel, means, forclamping said channel securely about said flange, a gate adapted forcooperation with said seating face said ate havin separable u er and 7 bO L lower portions, and a link pivotallyconnecting the lower portion ofsaid gate with said body for free swinging movement toward and away fromsaid seating face,

2. A flood gate comprising a'body adapt- 'ed for inclusion in a conduitand having a seating face, a gateadapted for cooperation with saidseating face and provided with a lower portion and an upper portion, alink pivotally suspending said lower portion from said body, and meansfor removably connecting said upper portion with said lower portion. V

3. A flood gate comprising a body adapted for inclusion in a conduit andhaving a seating face,'a pair of spaced brackets rising from 'said'body, depending links pivotally connected with said brackets, a gateadapted for cooperation with saidseating face and divided into an upperportion and a lower.

